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61. 发明授权

US08194530B2 Dual packet configuration for wireless communications 有权
标题翻译：用于无线通信的双包配置
公开(公告)号：US08194530B2
公开(公告)日：2012-06-05
申请号：US11849579
申请日：2007-09-04
申请人： Mark A. Webster , Steven D. Halford , Richard D. Roberts
发明人： Mark A. Webster , Steven D. Halford , Richard D. Roberts
IPC分类号： H04J9/00
CPC分类号： H04L27/2602 , H04L27/0008 , H04W84/12 , H04W88/06 , H04W92/02
摘要： A dual packet configuration for wireless communications including a first portion that is modulated according to a serial modulation and a second portion that is modulated according to a parallel modulation. The serial modulation may be DSSS whereas the parallel modulation may be OFDM. The first portion may include a header, which may further include an OFDM mode bit and a length field indicating the duration the second portion. The first portion may be in accordance with 802.11b to enable dual mode devices to coexist and communicate in the same area as standard 802.11b devices. The dual mode devices can communicate at different or higher data rates without interruption from the 802.11b devices. The packet configuration may include an OFDM signal symbol which further includes a data rate section and a data count section. In this manner, data rates the same as or similar to the 802.11a data rates may be specified between dual mode devices. The first and second portions may be based on the same or different clock fundamentals. For OFDM, the number of subcarriers, pilot tones and guard interval samples may be modified independently or in combination to achieve various embodiments. Also, data subcarriers may be discarded and replaced with pilot tones for transmission. The receiver regenerates the discarded data based on received data, such as using ECC techniques.
摘要翻译：一种用于无线通信的双包配置，包括根据串行调制被调制的第一部分和根据并行调制被调制的第二部分。串行调制可以是DSSS，而并行调制可以是OFDM。第一部分可以包括报头，报头还可以包括OFDM模式位和指示第二部分的持续时间的长度字段。第一部分可以符合802.11b，以使得双模式设备能够在与标准802.11b设备相同的区域中共存和通信。双模设备可以以不同或更高的数据速率进行通信，而不会中断802.11b设备。分组配置可以包括还包括数据速率部分和数据计数部分的OFDM信号符号。以这种方式，可以在双模式设备之间指定与802.11a数据速率相同或类似的数据速率。第一和第二部分可以基于相同或不同的时钟基本原理。对于OFDM，可以独立地或组合地修改子载波数，导频音和保护间隔样本的数量以实现各种实施例。此外，可以丢弃数据副载波并用导频音来代替传输。接收机基于接收的数据（例如使用ECC技术）重新生成丢弃的数据。

62. 发明授权

US07830312B2 Wireless antenna array system architecture and methods to achieve 3D beam coverage 有权
标题翻译：无线天线阵列系统架构及方法实现三维射束覆盖
公开(公告)号：US07830312B2
公开(公告)日：2010-11-09
申请号：US12215542
申请日：2008-06-27
申请人： Debabani Choudhury , Richard D. Roberts , Ulun Karacaoglu
发明人： Debabani Choudhury , Richard D. Roberts , Ulun Karacaoglu
IPC分类号： H01Q1/38 , H01Q21/00
CPC分类号： H01Q1/246 , H01Q1/2283 , H01Q1/2291 , H01Q1/38 , H01Q3/26 , H01Q3/34 , H01Q9/0407 , H01Q21/065 , H01Q21/067 , H01Q21/205 , H01Q21/24 , H01Q25/00 , H01Q25/04 , H04B7/0682
摘要： Embodiments of wireless antenna array systems to achieve three-dimensional beam coverage are described herein. Other embodiments may be described and claimed.
摘要翻译：本文描述了实现三维波束覆盖的无线天线阵列系统的实施例。可以描述和要求保护其他实施例。

63. 发明授权

US07724783B2 System and method for passing data frames in a wireless network 有权
标题翻译：用于在无线网络中传送数据帧的系统和方法
公开(公告)号：US07724783B2
公开(公告)日：2010-05-25
申请号：US10546752
申请日：2004-02-27
申请人： William M. Shvodian , John W. McCorkle , Paul R. Runkle , Timothy R. Miller , Matthew L. Welborn , Douglas E. Price , Adrian R. Macias , Richard D. Roberts , Deepak M. Joseph
发明人： William M. Shvodian , John W. McCorkle , Paul R. Runkle , Timothy R. Miller , Matthew L. Welborn , Douglas E. Price , Adrian R. Macias , Richard D. Roberts , Deepak M. Joseph
IPC分类号： H04J3/06 , H04B1/00 , H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04B1/71637 , H04B1/7183 , H04B7/2678 , H04L2025/03375 , H04L2025/0349 , H04W56/00
摘要： A method is provided for receiving a data frame in an ultrawide bandwidth network. In this method, a device receives an ultrawide bandwidth signal containing a data frame. The device then performs an acquisition operation during a first preamble in the data frame, and identifies a marker after the first preamble that indicates that the first preamble has ended. After this, the device performs a signal processing operation during a second preamble in the data frame. After the training, the device then receives a header in the data frame, and then receives a payload in the data frame. By having a marker between the two preambles, this method provides a receiving device with critical information regarding the timing of the preamble section of a frame.
摘要翻译：提供了一种用于在超宽带宽网络中接收数据帧的方法。在该方法中，设备接收包含数据帧的超宽带宽信号。然后，设备在数据帧中的第一前导码期间执行采集操作，并且识别出指示第一前同步码已经结束的第一前同步码之后的标记。此后，设备在数据帧中的第二前导码期间执行信号处理操作。在训练之后，设备接收数据帧中的报头，然后在数据帧中接收有效载荷。通过在两个前导码之间具有标记，该方法向接收设备提供关于帧的前导码部分的定时的关键信息。

64. 发明授权

US07653020B2 Wireless ultra wideband network having interference mitigation and related methods 有权
标题翻译：具有干扰减轻和相关方法的无线超宽带网络
公开(公告)号：US07653020B2
公开(公告)日：2010-01-26
申请号：US10962953
申请日：2004-10-12
申请人： Richard D. Roberts
发明人： Richard D. Roberts
IPC分类号： H04B7/158
CPC分类号： H04B1/719
摘要： A ultra wideband (UWB) wireless network may include a plurality of UWB wireless devices communicating over a plurality of UWB frequency bins extending over a UWB frequency range. At least one of the UWB wireless devices may be for determining a respective actual signal level associated with each UWB frequency bin, and generating a do-not-use UWB frequency bin list by comparing each actual signal level with at least one interference threshold. Thus, the UWB wireless devices can avoid using frequency bins experiencing excessive interference to thereby provide more reliable UWB communications.
摘要翻译：超宽带（UWB）无线网络可以包括在UWB频率范围上延伸的多个UWB频率仓上通信的多个UWB无线设备。 UWB无线设备中的至少一个可以用于确定与每个UWB频率仓相关联的相应实际信号电平，并且通过将每个实际信号电平与至少一个干扰阈值进行比较来生成不使用UWB频率列表。因此，UWB无线设备可以避免使用经历过多干扰的频率仓，从而提供更可靠的UWB通信。

65. 发明授权

US07428898B2 Apparatus for removing contaminants from crankcase emissions 失效
标题翻译：用于从曲轴箱排放物去除污染物的设备
公开(公告)号：US07428898B2
公开(公告)日：2008-09-30
申请号：US11280902
申请日：2005-11-16
申请人： Richard D. Roberts , James R. Brock , Edmund X. Loughran
发明人： Richard D. Roberts , James R. Brock , Edmund X. Loughran
IPC分类号： F02B25/06
CPC分类号： B01D19/0042 , F01M13/04 , F01M2013/0427 , F01M2013/0433 , F02M25/06 , Y02T10/121
摘要： A separator for separating liquids in a fluid stream generated by blow-by gases produced in a crankcase of an internal combustion engine wherein the fluid stream includes both gasses and liquids. The separator including an inlet in fluid connection with the engine for receiving the fluid stream and an outlet in fluid connection with the engine to return a gas stream to the engine. The separator further including a fluid path fluidly connecting the inlet to the outlet and a containment vessel in fluid connection with the fluid path. The separator having a fluid stream accelerator in the fluid path and the accelerator accelerating the fluid stream to at least partially separate the gasses from the liquids in the fluid stream.
摘要翻译：一种用于分离由在内燃机的曲轴箱中产生的窜气产生的流体流中的液体的分离器，其中流体流包括气体和液体。分离器包括与发动机流体连接的用于接收流体流的入口和与发动机流体连接以将气流返回到发动机的出口。分离器还包括将入口流体地连接到出口的流体路径和与流体路径流体连接的容纳容器。所述分离器在流体路径中具有流体流加速器，加速器加速流体流以至少部分地将气体与流体流中的液体分离。

66. 发明授权

US07274652B1 Dual packet configuration for wireless communications 有权
标题翻译：用于无线通信的双包配置
公开(公告)号：US07274652B1
公开(公告)日：2007-09-25
申请号：US09586571
申请日：2000-06-02
申请人： Mark A. Webster , Steven D. Halford , Richard D. Roberts
发明人： Mark A. Webster , Steven D. Halford , Richard D. Roberts
IPC分类号： H04J9/00
CPC分类号： H04L27/2602 , H04L27/0008 , H04W84/12 , H04W88/06 , H04W92/02
摘要： A dual packet configuration for wireless communications including a first portion that is modulated according to a serial modulation and a second portion that is modulated according to a parallel modulation. The serial modulation may be DSSS whereas the parallel modulation may be OFDM. The first portion may include a header, which may further include an OFDM mode bit and a length field indicating the duration the second portion. The first portion may be in accordance with 802.11b to enable dual mode devices to coexist and communicate in the same area as standard 802.11b devices. The dual mode devices can communicate at different or higher data rates without interruption from the 802.11b devices. The packet configuration may include an OFDM signal symbol which further includes a data rate section and a data count section. In this manner, data rates the same as or similar to the 802.11a data rates may be specified between dual mode devices. The first and second portions may be based on the same or different clock fundamentals. For OFDM, the number of subcarriers, pilot tones and guard interval samples may be modified independently or in combination to achieve various embodiments. Also, data subcarriers may be discarded and replaced with pilot tones for transmission. The receiver regenerates the discarded data based on received data, such as using ECC techniques.
摘要翻译：一种用于无线通信的双包配置，包括根据串行调制被调制的第一部分和根据并行调制被调制的第二部分。串行调制可以是DSSS，而并行调制可以是OFDM。第一部分可以包括报头，报头还可以包括OFDM模式位和指示第二部分的持续时间的长度字段。第一部分可以符合802.11b，以使得双模式设备能够在与标准802.11b设备相同的区域中共存和通信。双模设备可以以不同或更高的数据速率进行通信，而不会中断802.11b设备。分组配置可以包括还包括数据速率部分和数据计数部分的OFDM信号符号。以这种方式，可以在双模式设备之间指定与802.11a数据速率相同或类似的数据速率。第一和第二部分可以基于相同或不同的时钟基本原理。对于OFDM，可以独立地或组合地修改子载波数，导频音和保护间隔样本的数量以实现各种实施例。此外，可以丢弃数据副载波并用导频音来代替传输。接收机基于接收的数据（例如使用ECC技术）重新生成丢弃的数据。

67. 发明授权

US07039392B2 System and method for providing device authentication in a wireless network 失效
标题翻译：在无线网络中提供设备认证的系统和方法
公开(公告)号：US07039392B2
公开(公告)日：2006-05-02
申请号：US10318372
申请日：2002-12-13
申请人： John W. McCorkle , Matthew L. Welborn , Richard D. Roberts
发明人： John W. McCorkle , Matthew L. Welborn , Richard D. Roberts
IPC分类号： H04M1/66
CPC分类号： H04W12/06 , G01S7/023 , G01S13/0209 , H04B1/7163 , H04J3/0682 , H04L25/4902 , H04L27/0004 , H04L63/0428 , H04L63/0492 , H04L63/08 , H04L63/162 , H04W24/00 , H04W28/18 , H04W52/288 , H04W64/00 , H04W74/00 , H04W80/02 , H04W84/18
摘要： A system and method are provided for authenticating a new device in a wireless network using an authentication device. First, the new device estimates the distance between the new device and the authenticating device as a first distance measurement, and sends the first distance measurement to the authentication device. The authentication device then estimates the distance between the new device and the authenticating device as a second distance measurement. The authentication device then evaluates the first and second distance measurements to determine if they meet authentication criteria and sends authentication data to the new device only if the first and second distance measurements meet the authentication criteria. These criteria can be that they do not differ by more than a set error value or that they both are below a set maximum value.
摘要翻译：提供了一种用于使用认证装置在无线网络中认证新设备的系统和方法。首先，新设备将新设备和认证设备之间的距离估计为第一距离测量，并将第一距离测量发送到认证设备。认证装置然后估计新设备和认证设备之间的距离作为第二距离测量。认证设备然后评估第一和第二距离测量以确定它们是否满足认证标准，并且仅当第一和第二距离测量符合认证标准时才将认证数据发送到新设备。这些标准可以是它们不同于设定的错误值，或者它们都低于设定的最大值。

68. 发明授权

US06788117B2 Method and apparatus for generating frequency-stable wavelets 有权
标题翻译：用于产生频率稳定小波的方法和装置
公开(公告)号：US06788117B2
公开(公告)日：2004-09-07
申请号：US10379587
申请日：2003-03-06
申请人： Richard D. Roberts
发明人： Richard D. Roberts
IPC分类号： H03B1900
CPC分类号： H04L27/0004
摘要： A method is provided for generating a frequency stable wavelet. Initially, a first sine wave is generated having a first frequency. Then, a half sine wave window is generated having a window frequency. The first sine wave and the half sine wave window are then mixed to create the frequency stable wavelet. In this process the sine wave has a frequency greater than half sine wave window so that the half sine wave window covers more than a single sine pulse. The half wave window can be created by generating a second sine wave having a second frequency that is twice the window frequency, and then fully rectifying the second sine wave. The wavelets created in this manner can be used for a variety of purposes, including correlating with a received signal or transmitting as a wireless signal.
摘要翻译：提供了一种用于产生频率稳定小波的方法。最初，产生具有第一频率的第一正弦波。然后，产生具有窗口频率的半正弦波窗口。然后将第一正弦波和半正弦波窗口混合以产生频率稳定小波。在这个过程中，正弦波的频率大于一半正弦波窗口，这样半正弦波窗口就会覆盖单个正弦波。可以通过产生具有窗口频率的两倍的第二频率的第二正弦波，然后完全校正第二正弦波来创建半波窗口。以这种方式创建的小波可以用于各种目的，包括与接收信号相关或作为无线信号发射。

69. 发明授权

US06058162A Testing of digital subscriber loops using multi-tone power ratio (MTPR) waveform 失效
标题翻译：使用多音频功率比（MTPR）波形测试数字用户回路
公开(公告)号：US06058162A
公开(公告)日：2000-05-02
申请号：US985589
申请日：1997-12-05
申请人： George Rodney Nelson , Richard D. Roberts , Ronald S. Squires
发明人： George Rodney Nelson , Richard D. Roberts , Ronald S. Squires
IPC分类号： H04M1/24
CPC分类号： H04M1/24
摘要： The performance of digital subscriber loops is tested through transmission, reception and analysis of a multi-tone power ratio (MTPR) waveform, containing plural discrete tones having equal spectral spacings and notches periodically distributed among the tones. The noise floor at a missing sub-carrier spectral location is integrated and compared to signal power of an adjacent sub-carrier within the test vector waveform. From these two values, MTPR is determined for various carrier locations, so that maximum theoretical loop payload can be calculated. To generated a figure of merit (FOM) under test, a data modem is placed at each end of the loop. The FOM obtained from MTPR analysis is channel based, not equipment based, and is independent of receiver implementation. Before placing a new customer in service, the MTPR FOMs for a number of loops are compared to bit rate information in a database, which correlates MTPR with a bit rate for a specific modem. Given the terminal equipment, MTPR FOMs, and the customer's data rate, one or more cable pairs that satisfy or exceed the FOM within an available cable bundle may be selected.
摘要翻译：数字用户环路的性能通过传输，接收和分析多音频功率比（MTPR）波形来测试，该波形包含具有相同频谱间隔的多个离散音调和在音调之间周期性分布的缺口。在丢失的子载波频谱位置处的噪声底层被积分并且与测试矢量波形内的相邻子载波的信号功率进行比较。根据这两个值，确定各种载波位置的MTPR，从而可以计算最大理论环路有效载荷。为了产生测试中的品质因数（FOM），数据调制解调器放置在循环的每一端。从MTPR分析获得的FOM是基于信道的，而不是基于设备的，并且与接收机实现无关。在将新客户投入使用之前，将多个循环的MTPR FOM与数据库中的比特率信息进行比较，将MTPR与特定调制解调器的比特率相关联。给定终端设备，MTPR FOM和客户的数据速率，可以选择满足或超过可用电缆束内的FOM的一个或多个电缆对。

70. 发明授权

US5500879A Blind signal separation and equalization of full-duplex amplitude modulated signals on a signal transmission line 失效
标题翻译：信号传输线上全双工幅度调制信号的盲信号分离和均衡
公开(公告)号：US5500879A
公开(公告)日：1996-03-19
申请号：US213886
申请日：1994-03-16
申请人： Mark A. Webster , Keith R. Baldwin , Richard D. Roberts
发明人： Mark A. Webster , Keith R. Baldwin , Richard D. Roberts
IPC分类号： H04B3/23 , H03K7/02
CPC分类号： H04B3/23 , H04L25/0266 , H03H2021/0034
摘要： An apparatus for blind signal separation and equalization of PAM signals on a full duplex transmission line is capable of successfully extracting and recovering the respective signalling components of a full-duplex wireline digital data link without having to disturb the link during its use (e.g. as by interrupting service to sever the link in order to install a line coupling device, such as a modem or attenuator pad to signal monitoring equipment) and without having to generate PN or other training sequences. A full-duplex wireline bridge device comprises a signal characteristic monitoring device that is capable of monitoring the link and providing respective output signals representative of the respective unidirectional signal components being transmitted simultaneously in opposite directions along the link. A directional signal separator, comprised of a voltage probe and a current probe, each of which can be coupled to the link without severing the link or otherwise disrupting ongoing communications, couples the signal characteristic monitoring device to the link. The signal processing device is operative to controllably combine the outputs of the voltage and current probes and provides respective output signals that are representative of the desired unidirectional signal components. The communications link may be either a single wire transmission line or a two wire balanced transmission line. In the latter instance individual probes of pairs of voltage and current probes are coupled to respective portions of the two wire balanced transmission line.
摘要翻译：用于全双工传输线上的PAM信号的盲信号分离和均衡的装置能够成功地提取和恢复全双工有线数字数据链路的各个信令分量，而不必在其使用期间干扰链路（例如，如中断服务以切断链路，以便安装线路耦合设备，例如调制解调器或衰减器垫来信号监测设备），而不必生成PN或其他训练序列。全双工有线电桥装置包括信号特征监测装置，其能够监测链路并提供表示沿着链路沿相反方向同时传输的相应单向信号分量的相应输出信号。定向信号分离器，包括电压探头和电流探头，每个可以耦合到链路而不中断链路或以其他方式中断正在进行的通信，将信号特征监测装置耦合到链路。信号处理装置可操作地组合电压和电流探头的输出，并提供表示期望的单向信号分量的相应的输出信号。通信链路可以是单线传输线路或二线平衡传输线路。在后一种情况下，电压和电流探针对的单个探针耦合到两线平衡传输线的相应部分。

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